Manually driven water surf board - is fitted with pumps to expel air or to generate water flow and operated by either arms or legs or both

摘要

The water surf board is driven by human muscle power, having pumps located on the surf board which are operated by the user either in the standing or the sitting position according to type of production. The pumps either generate a water flow through an accelerator or alternatively expel air sucked in directly under the water surface thus producing a forward movement. A detachable method of construction facilitates transport of the surf board and unified attachment points on the surf board for both types of drive to permit their alternate use on one board.